Delay in showing menus, tooltips, 3D cursor: Actually, delay in showing everything
This sounds like a graphical issue, either from your GPU or graphics drivers; for this sort of problem you should always post what your graphics card is so it helps solving your problem.

You mention having no dedicated graphics processing unit, only an Intel integrated one, which are largely regarded as low end and known to often cause problems with blender, so that is most likely the origin of your problem.

Not exactly sure how to solve your graphical glitch, try upgrading your drivers to the latest version.

After that you could open blender, go to the User Preferences > System Tab > Window Drawing Method and play around with the options in the dropdown menu, see if any other besides the default one work better for your particular machine. Make sure you save settings and restart Blender in between changes.

Also try turning off any multi sample if it s turned on, in the menu right after the previous one.